Malicious PDF — malware analysis report

Static analysis result for SHA-256 2087714c76edfbc0…

MALICIOUS

PDF

35.2 KB Created: 2021-06-27 22:46:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 18e61e0035b11030e142af561a179685 SHA-1: 6c7a597448cbac13cdee7434d524376f2655a92f SHA-256: 2087714c76edfbc04beeecd1c65d2da97817d7bc40561c0e9fe9042ddf8476af
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document employs a link farm strategy, presenting itself as a 'Roblox Hack' and containing numerous links to other PDFs hosted on similar domains, likely as a lure for users seeking game cheats. The document explicitly instructs users to copy and paste content into a command-line context, indicating an attempt to trick users into executing malicious commands. The ML classifier also flagged this document with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/r2d-roblox-hack-game-hack PDF link annotation
    • https://library.institutpendidikan.ac.id/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-apps-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-hack-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-link-2021-twitter_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-high-school-cindering-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/bullet-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/pubg-uc-50-tl_GM1330123889.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3250 22512 bytes
SHA-256: 68eba3004420213357845e20a9217ec458c5e27db3cee8da548cd49f4ceccc53
font_01_sfnt_off0000649a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649A 18956 bytes
SHA-256: 51f4a3bcb46149c3f3fae3ad14670bd8a84a728fae00c3eb3eece830c386a6c2

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